A swing mechanism for a construction machine having a grease bath seal. The system includes at least one supporting beam and at least two telescopic bar organs, each having a first end disposed on the floor of the container and a second end expandable to the ceiling of the container, pressing thereby against the floor and the ceiling. Rotation of the rotatable member is detected by a sensing arrangement, which is interconnected with a visual display for providing a user with a visual indication as to the rate of advancement of the wrap material. The same firmware upgrades may be stored on more than one FTP server. When the discrepancy response resolves the discrepancy, the discrepancy response is stored in the clinical data management system, thereby resolving the discrepancy.